Street-car brake.



N0- 797,896. PATENTED AUG. 22, 1905.

- M. KLEIN.

STREET CAR BRAKE.

APPLICATION FILED 3.29, 1905.

AW. i, cmuu co. mmwmmmmns. mmrm tt' UNITED STATES PATENT OFFICE.

STREET-CAR BRAKE.

Specification of Letters Patent.

Patented Aug. 22, 1905.

Application filed April 29, 1905. Serial No. 258.069.

[0 a whom it may concern.-

Be it known that I, MATHIAS KLEIN, acitizen of the United States ofAmerica, residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inStreet-(Jar Brakes, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This invention relates to certain new and useful improvements incar-brakes, and'relates more particularly to a novel form of auxiliarybrake adapted to be used in case of a runaway or accident which wouldrequire the immediate stopping of a car.

My invention aims to provide a brake which can be easily and quicklysecured upon a car equipped with the ordinary wheel-frictionengagingbrakes, and in this connection I have so constructed my improved brakethat it can be readily manipulated by the motorman of a car when it isdesired to instantly stop the movement of said car.

Briefly described, my improved brake comprises a serrated shoe which ispivotally mounted beneath the bed of a car or the running-gear thereof,and by the employment of pivoted levers a motorman can quickly operatethe brake to move the serrated shoe in engagement with the road-bed overwhich the car is traveling.

The above construction will be hereinafter more fully described and thenspecifically pointed out in the claim, and, referring to the drawingsaccompanying this application, like numerals of reference designatecorresponding parts throughout the several views, in which- Figure 1 isa bottom plan view of a car bed or platform equipped with my improvedbrake. Fig. 2 is a side elevation view of the same. Fig. 3 is a-frontview of the same. Fig. 4 is a detail sectional view of an operating-rodemployed in connection with my improved brake.

5 5. Between the brackets 4 1 I pivotally mount a rearwardly-extendingbar 6 by a pin with a transversely-disposed shoe 8, the lower edge ofwhich is provided with a serrated or roughened surface 9, adapted toengage the road-bed over which a car equipped with my improved braketravels.

To one side of the car-body, adjacent to the front end thereof, Iprovide depending brackets 1O 10, which are secured to the car-body bysuitable bolts and nuts 11 11. Between these'brackets is pivotallymounted an arm 12 by a pin 14, and the innermost end of said arm ispivotally connected by a pin 14 within the bifurcated end 15 of the bar6. The opposite end of the arm 12 is attached to the lower endof anoperating rod or screw 16, the lower end of said screw being providedwith a screw-threaded shank portion 17, upon which a nut 18 is placed toretain the pierced end 19 of the arm 12 in engagement with the screw. I

The body of the car is provided with an opening 20, and attached to theunderneath surface of the car-body adjacent to said aperture is a nut orcollar 21, in which is adapted to operate the screw-threaded portion 22of the screw or operating rod 16. That end of the operating rod or screw16 extending upwardly through the car-body 1 is provided with a suitableoperating wheel or handle 23.

To manipulate my improved car-brakes, it is only necessary for themotorman or the operator of the car to rotate the screw or operating rod16 in order to throw my improved brakes into operation. Should it benecessary to place the shoe 8 in engagement with the road-bed, theoperating-screw is rotated to lower the end 19 of the arm 12, and by thepivoting of this arm and the bar 6 the shoe will be thrown intoengagement with the roadbed, the serrated surface of said shoe engagingthe road-bed and bringing the car to a standstill. To release this shoefrom engagement with the road-bed, the screw 16 is operated to elevatethe end 19- of the arm, which consequently elevates the shoe.

It will be observed from the foregoing description that I haveconstructed a novel form of brake which is extremely simple inconstruction, strong and durable, comparatively inexpensive tomanufacture, and that cars can be readily equipped with my improvedbrake without dispensing with the ordinary and conventional form ofbrakes commonly used and r. The rear end of the bar 6 is provided otherof said brackets and having its one end pivotally connected to said bar,a screw-rod operating in said car-body, the lower end of said screw-rodbeing connected to the loose end of said arm, whereby when said screw isrotated said shoe can be elevated or lowered, substantially asdescribed.

In testimony whereof I affix my signature in I the presence of twowitnesses.

MATHIAS KLEIN. Witnesses E. E. POTTER, G. KLosTERMANN.

